| /* |
| * This file is part of the Chelsio T4 Ethernet driver for Linux. |
| * |
| * Copyright (c) 2003-2010 Chelsio Communications, Inc. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #ifndef __CXGB4_OFLD_H |
| #define __CXGB4_OFLD_H |
| |
| #include <linux/cache.h> |
| #include <linux/spinlock.h> |
| #include <linux/skbuff.h> |
| #include <linux/atomic.h> |
| |
| /* CPL message priority levels */ |
| enum { |
| CPL_PRIORITY_DATA = 0, /* data messages */ |
| CPL_PRIORITY_SETUP = 1, /* connection setup messages */ |
| CPL_PRIORITY_TEARDOWN = 0, /* connection teardown messages */ |
| CPL_PRIORITY_LISTEN = 1, /* listen start/stop messages */ |
| CPL_PRIORITY_ACK = 1, /* RX ACK messages */ |
| CPL_PRIORITY_CONTROL = 1 /* control messages */ |
| }; |
| |
| #define INIT_TP_WR(w, tid) do { \ |
| (w)->wr.wr_hi = htonl(FW_WR_OP(FW_TP_WR) | \ |
| FW_WR_IMMDLEN(sizeof(*w) - sizeof(w->wr))); \ |
| (w)->wr.wr_mid = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*w), 16)) | \ |
| FW_WR_FLOWID(tid)); \ |
| (w)->wr.wr_lo = cpu_to_be64(0); \ |
| } while (0) |
| |
| #define INIT_TP_WR_CPL(w, cpl, tid) do { \ |
| INIT_TP_WR(w, tid); \ |
| OPCODE_TID(w) = htonl(MK_OPCODE_TID(cpl, tid)); \ |
| } while (0) |
| |
| #define INIT_ULPTX_WR(w, wrlen, atomic, tid) do { \ |
| (w)->wr.wr_hi = htonl(FW_WR_OP(FW_ULPTX_WR) | FW_WR_ATOMIC(atomic)); \ |
| (w)->wr.wr_mid = htonl(FW_WR_LEN16(DIV_ROUND_UP(wrlen, 16)) | \ |
| FW_WR_FLOWID(tid)); \ |
| (w)->wr.wr_lo = cpu_to_be64(0); \ |
| } while (0) |
| |
| /* Special asynchronous notification message */ |
| #define CXGB4_MSG_AN ((void *)1) |
| |
| struct serv_entry { |
| void *data; |
| }; |
| |
| union aopen_entry { |
| void *data; |
| union aopen_entry *next; |
| }; |
| |
| /* |
| * Holds the size, base address, free list start, etc of the TID, server TID, |
| * and active-open TID tables. The tables themselves are allocated dynamically. |
| */ |
| struct tid_info { |
| void **tid_tab; |
| unsigned int ntids; |
| |
| struct serv_entry *stid_tab; |
| unsigned long *stid_bmap; |
| unsigned int nstids; |
| unsigned int stid_base; |
| |
| union aopen_entry *atid_tab; |
| unsigned int natids; |
| |
| unsigned int nftids; |
| unsigned int ftid_base; |
| unsigned int aftid_base; |
| unsigned int aftid_end; |
| |
| spinlock_t atid_lock ____cacheline_aligned_in_smp; |
| union aopen_entry *afree; |
| unsigned int atids_in_use; |
| |
| spinlock_t stid_lock; |
| unsigned int stids_in_use; |
| |
| atomic_t tids_in_use; |
| }; |
| |
| static inline void *lookup_tid(const struct tid_info *t, unsigned int tid) |
| { |
| return tid < t->ntids ? t->tid_tab[tid] : NULL; |
| } |
| |
| static inline void *lookup_atid(const struct tid_info *t, unsigned int atid) |
| { |
| return atid < t->natids ? t->atid_tab[atid].data : NULL; |
| } |
| |
| static inline void *lookup_stid(const struct tid_info *t, unsigned int stid) |
| { |
| stid -= t->stid_base; |
| return stid < t->nstids ? t->stid_tab[stid].data : NULL; |
| } |
| |
| static inline void cxgb4_insert_tid(struct tid_info *t, void *data, |
| unsigned int tid) |
| { |
| t->tid_tab[tid] = data; |
| atomic_inc(&t->tids_in_use); |
| } |
| |
| int cxgb4_alloc_atid(struct tid_info *t, void *data); |
| int cxgb4_alloc_stid(struct tid_info *t, int family, void *data); |
| void cxgb4_free_atid(struct tid_info *t, unsigned int atid); |
| void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family); |
| void cxgb4_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid); |
| |
| struct in6_addr; |
| |
| int cxgb4_create_server(const struct net_device *dev, unsigned int stid, |
| __be32 sip, __be16 sport, unsigned int queue); |
| |
| static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue) |
| { |
| skb_set_queue_mapping(skb, (queue << 1) | prio); |
| } |
| |
| enum cxgb4_uld { |
| CXGB4_ULD_RDMA, |
| CXGB4_ULD_ISCSI, |
| CXGB4_ULD_MAX |
| }; |
| |
| enum cxgb4_state { |
| CXGB4_STATE_UP, |
| CXGB4_STATE_START_RECOVERY, |
| CXGB4_STATE_DOWN, |
| CXGB4_STATE_DETACH |
| }; |
| |
| enum cxgb4_control { |
| CXGB4_CONTROL_DB_FULL, |
| CXGB4_CONTROL_DB_EMPTY, |
| CXGB4_CONTROL_DB_DROP, |
| }; |
| |
| struct pci_dev; |
| struct l2t_data; |
| struct net_device; |
| struct pkt_gl; |
| struct tp_tcp_stats; |
| |
| struct cxgb4_range { |
| unsigned int start; |
| unsigned int size; |
| }; |
| |
| struct cxgb4_virt_res { /* virtualized HW resources */ |
| struct cxgb4_range ddp; |
| struct cxgb4_range iscsi; |
| struct cxgb4_range stag; |
| struct cxgb4_range rq; |
| struct cxgb4_range pbl; |
| struct cxgb4_range qp; |
| struct cxgb4_range cq; |
| struct cxgb4_range ocq; |
| }; |
| |
| #define OCQ_WIN_OFFSET(pdev, vres) \ |
| (pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size)) |
| |
| /* |
| * Block of information the LLD provides to ULDs attaching to a device. |
| */ |
| struct cxgb4_lld_info { |
| struct pci_dev *pdev; /* associated PCI device */ |
| struct l2t_data *l2t; /* L2 table */ |
| struct tid_info *tids; /* TID table */ |
| struct net_device **ports; /* device ports */ |
| const struct cxgb4_virt_res *vr; /* assorted HW resources */ |
| const unsigned short *mtus; /* MTU table */ |
| const unsigned short *rxq_ids; /* the ULD's Rx queue ids */ |
| unsigned short nrxq; /* # of Rx queues */ |
| unsigned short ntxq; /* # of Tx queues */ |
| unsigned char nchan:4; /* # of channels */ |
| unsigned char nports:4; /* # of ports */ |
| unsigned char wr_cred; /* WR 16-byte credits */ |
| unsigned char adapter_type; /* type of adapter */ |
| unsigned char fw_api_ver; /* FW API version */ |
| unsigned int fw_vers; /* FW version */ |
| unsigned int iscsi_iolen; /* iSCSI max I/O length */ |
| unsigned short udb_density; /* # of user DB/page */ |
| unsigned short ucq_density; /* # of user CQs/page */ |
| void __iomem *gts_reg; /* address of GTS register */ |
| void __iomem *db_reg; /* address of kernel doorbell */ |
| int dbfifo_int_thresh; /* doorbell fifo int threshold */ |
| }; |
| |
| struct cxgb4_uld_info { |
| const char *name; |
| void *(*add)(const struct cxgb4_lld_info *p); |
| int (*rx_handler)(void *handle, const __be64 *rsp, |
| const struct pkt_gl *gl); |
| int (*state_change)(void *handle, enum cxgb4_state new_state); |
| int (*control)(void *handle, enum cxgb4_control control, ...); |
| }; |
| |
| int cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p); |
| int cxgb4_unregister_uld(enum cxgb4_uld type); |
| int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb); |
| unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo); |
| unsigned int cxgb4_port_chan(const struct net_device *dev); |
| unsigned int cxgb4_port_viid(const struct net_device *dev); |
| unsigned int cxgb4_port_idx(const struct net_device *dev); |
| unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu, |
| unsigned int *idx); |
| void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4, |
| struct tp_tcp_stats *v6); |
| void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask, |
| const unsigned int *pgsz_order); |
| struct sk_buff *cxgb4_pktgl_to_skb(const struct pkt_gl *gl, |
| unsigned int skb_len, unsigned int pull_len); |
| int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx, u16 size); |
| int cxgb4_flush_eq_cache(struct net_device *dev); |
| #endif /* !__CXGB4_OFLD_H */ |